I'm an intermediate photographer (in skill, not equipment) and I'm on the search for a 50mm f/1.8 lens for my Canon EOS 350D (aka Digital Rebel XT) and I can't find any for the life of me... Every search I make, be it on amazon.com, bhphotovideo.com, or even google, I can not find an AF 50mm f/1.8 lens. All I find are EF ones... now as far as I know, these have a different mount setup. Am I right? I have an AF->EF mount for my 350D, but it's weird and the corrective lens isn't very good. I saw a poster here where they used a 50mm EF lens on a 30D. It confused me. Am I missing something? Can I easily put the EF lens on my digital camera? What do I need?